1366 - Incorrect integer value: '' for column `mapshopatlogis`.`whos_online`.`customer_id` at row 1

insert into whos_online (customer_id, full_name, session_id, ip_address, time_entry, time_last_click, last_page_url) values ('', 'Guest', '05dfd6a7331cbdc1be41264043c5581e', '3.17.28.48', '1713945708', '1713945708', '/index.php/cat/c30_Countries.html/page/2')

[XT SQL Error]